Controlling attachment for heating-lamps.



No; 8ss,ess. PATENTED APR. 7, 1908.

L. W. HOLMES & o. v. TRAUTMAN. CONTROLLING ATTACHMENT FOR HEATING LAMPS.

APPLICATION TILED APR. 24, 1907.

I4 1 2/ Z & J4 1/ x f v PV L F5 6/ J 'l IT/V 15194; w k l NVZi/VTORJ W II r f A TTOR/VE VS LEWIS W. HOLMES AND CORNELIUS V. TRAUTMADLOF MEDORA,INDIANA.

CONTROLLING ATTACHMENT FQR- HEATING-LAMPS.

Specification of Letters Patent.

Patented April 7, 1908.

Application filed April 24, 1907. Serial No. 370,055.

To all whom it may concern:

Be it known that we, LEWIS W. HOLMES and CORNELIUS V. TRAUTMAN, citizensof the United States, residing at Medora, in the county of Jackson andState of Indiana, have invented a new and useful Controlling Attachmentfor Heating-Lamps, of which the following is a specification.

This invention relates to controlling attachments for heating lamps suchas used in connection with incubators and its object is to providethermostatically controlled means for increasing or reducing. the sizeof the flame so that'the temperature within the in cubator may bemaintained uniform. I

Another object is to provide-simple and efficient means for adjustingthe attachment so 'as to maintain any desired degree of heat within theincubator.

With these and other objects in view the invention consists of certainnovel features of construction and combinations of parts which will behereinafter more fullydescribed and pointed out in the claims.

In the accompanying drawings is shown the preferred form oftheinvention.

In said drawings: Figure 1 is a section through a portion of anincubator and showing the attachment in elevation; Fig. 2 is a plan viewof the attachment; and Fig. 3 is a detail view of the flame controllinglever.

Referring to the figures by characters of reference, 1 designates thebody of an incubator or the like from which extends a bracket 2 designedto support a heating lam 3. A cross strip 4 is carried by this brac etand has upstanding ears 5 and 6, the ears 5 constitutlng bearings for arod 7 while the ears 6 serve to revent longitudinal displacement of therod? 7 at right angles thereto and carries arectangular sleeve 9 whichloosely surrounds a burner 10 of the heater 3. Another arm 11 extends inthe opposite direction from rod 7 and carries a counterbalance 1 Stoplugs 13 are supported beneath the arms'8 and 11 so as to limit, theirswinging movement. ,A bail-like extension 14 extends upward from the rod7 and is for the purposehereinafter set forth. j

Secured upon the body 1 and above bracket 2 is angular bracket 15 fromwhich extends a guide plate 16 having'inwithin the body 1.

An arm 8 extends from the rod turned flanges 17 at the sides thereof.slide '18 is mounted between these flanges and has an upstanding car 19.A plate 20 extends upward from bracket 15 and slid ably mountedwithin'it is an adjusting screw 21 which is connected to ear 19 andisengaged by-an adjusting nut 22. A coiled spring 23 is arranged upon thescrew 21 and bears at its ends on plate 20 and car 19. Ears 24 extenddownward from the slide 18 and bearing within them is the up er end of alever 25 having a fork 26' at its ower end which loosely engages thebail 14. An eye 27 is formed within this lever between its ends and isengaged b one end-of a link 28. The other end of this engages an car 29formed at one end of a thermostat30. This thermostat is in the form of abowed metallic strip secured at one end within the bod 1 and formed ofmaterial which will readily expand when heated.

It is to be understood that when the p rts are in their normal positionsthe wick 31 of the burner is exposed so that the flame will not beconfinedor restricted. When, however, the thermostat is subjected to aredetermined heat it will pull inward on lin 2-8 and lever 25 and swingthe bail 14 so as to raise arm 8 and sleeve 9. reduce the size of theflame and as the thermostat cools the parts will return to their initialpositions. It is obvious that by adjusting the slide 18 the parts can beregulated so as to maintain any desired tem erature By arranging t earts in the manner shown ,and' describe the movement of the thermostatis greatly multiplied so that a very slight ex ansion or contraction ofthe thermostat wil cause a considerable movement'of sleeve 9.

YVhat is claimed is:

The combination with a supporting structure and a bracket extendingtherefrom for supporting ahe'ater; of a cross strip connecting oppositeportions of the'bracket, u standing bearing ears thereon between tieends thereof ,upstanding retaining ears thereon adj acent the endsthereof, oppositely disposed stop lugs integral with the cross strip, arod detachably mounted upon the bearing ears and held againstlongitudinal movement by The sleeve will by the free end of said arm, anarm extending as our own, we have hereto afiixed our in the 8p ositeIdirection from thg rods 21, signatures in the presence of twowitnesses. counter a ance t 1616011, an u stan in ei upon the rod, and athermostatically? cong gi' 5 trolled lever pivotallyconnected to the tsupporting structure and having a forked Witnesses: end engaglng thebail. W. C. WILLIAMS,

In testimony that we claim the foregoing CHAS. V. WEDDELL.

